From our personal opinion we did find the LEVEL 10 M to be fairly heavy out-of-the-box, making it splendid for RTS and strategy where the added weight gave a bit of extra control. For FPS and other fast paced games this “panzer” mouse might not be to everybody’s preference. Another thing that not every gamer will appreciate is the fact that the plethora of buttons on both left & right side are obstructing the “side grip” zone for thumb and little finger. That said, the key shortcuts and macro’s you can assign to them makes up some of those flaws, it is for one very neat to assign a “desktop macro profile” where you use the previous/next buttons for copy/paste purposes, does save a hell lot of time moving files.